Gasoline motor



- Mar. 3, 1925.

C. UPTON GASOLINE MOTOR F'iled Nov. 27, 1922 3 Sheetgfiheet I vewtog atfoznclaa.

Mar. 3, 1925. 1,528,2-

C. UPTON GASOLINE MOTOR Fi'l'ecl NOV. 27, 1922 5 Sheets-Sheet 2 Mar. 3, 1925.

C. UPTON GASOLINE MOTOR 3 Sheets-Sheet 3 Filed Nov. 27, 1922 I awuwwo'o (550302.

Patented Mar. 3, 1925.

PATENT OFFICE.

CLAYTON UPTON. O-F CUTLER, ILLINOIS.

GASOLINE MOTOR.

Application filed November 27, 1922. Serial No. 603,572.

springs and the like, a corresponding simplification of the engine resulting.

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the invention appertains.

\Vith the above and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that, within the scope of what is claimed, changes in the precise embodiment of the invention shown can be made without departing from the spirit of the invention.

In the accompanying drawings Figure 1 shows in longitudinal section, a device constructed in accordance with the invention, the pistons being in firing position: Figure 2 is a sectional view wherein the pistons are disposed as they will appear when the burned gases are being discharged through the exhaust ports Figure 3 is a transverse section taken in a plane at right angles to the cutting plane in Figure 2.

The engine includes any desired number of cylinders 1, each cylinder being surmounted by a cap 2 which may be considered as part of the cylinder. There is a compartment 3 in the cap 2, communicating with side passages at in the cylinder 1, the cylin der having ports "5 establishing communication between the interior of the cylinder and the passages 4. The cylinder 1 is equipped intermediate its ends with an exhaustport- 6, and is provided intermediate its ends, with an intake port 9 located above the exhaust port 6. The cylinder 1 carries a firing means 8 and is provided with ofi'sets 7. A crank case 10 is assembled'with the cylinder 1 and a shaft 11 being journaled in the crank case, the shaft being 'supplied with outer-cranks 12 and with an intermediate crank 14.

Pitmen 15 are carried by thecranks 12 and operate in the offsets 7 of the cylinder 1, the pitmen being pivot-ed at their upper ends, as at 16, to an outer hollow piston 17 ,mounted for reciprocation in the cylinder 1 equipped intermediate its ends with an exhaust port 18, the piston 17 being equipped adjacent to its upper or outer end with inlet ports 19. An inner piston 20 is mounted for reciprocation in the outer piston 17. A pitman 21'is pivoted at 22 to the piston 20 and is connected to the intermediate crank 11 of the shaft 11.

As the outer piston 17 moves downwardly or inwardly. the piston 20 moves upwardly or outwardly. The parts then are located as shown in Figure 1, a charge being compressed between the heads of the pistons 17 and 20 and the charge being fired through one of the ports 19 in the piston 17,-by the means indicated at 8. The piston 17,- having moved downwardly or inwardly has created a partial vacuum in'the upper end of the cylinder 1, and as the piston 17 moves downwardly or inwardly beyond the port 9, a charge of fuel rushes into the outer end of the cylinder 1. When the charge is fired between the heads of the pistons 17 and 20, i

the piston 17 moves outwardly or upwardly, and the piston 20 moves inwardly or downwardly, to make the power stroke. The parts then appear as shown in' Figure 2. The first charge having been compressed in the upper end of the cylinder 1 by the upward movement of the piston 17, passes into the piston 17-, when the ports 19 of the piston 17 are alined with the ports 5, the charge traversing the passages 4. When the piston 17 moves upwardly, the exhaust port 18 in the piston is brought into registration with the exhaust port 6 of the cylinder 1, the piston 20 having moved downwardly until the port 18 is uncovered, as shown in Figure 3 whereupon, the first charge, entering through the ports 19, will scour the burned gases out through the registering ports 18 and 6. On the next stroke, the pistons 17 and 20 are redisposed in the position shown in Figure 1 whereupon the cycle is repeated.

The engine is so constructed that the gas, when exploded exerts a thrust in opposite directions on two relatively movable pistons which are engaged slidably with each other,

the construction of the device being simplified, and an unusually" powerful'engine resulting.

What is claimed is y In an internal combustion engine, a cylinder provided with oppositely disposed longitudinal passages, the cylinder having oppositely disposed intake ports communicating with the passages, the cylinder having a lateral exhaust port and with a lateral inlet port located between one of the intake ports and the exhaust ;port,-an outer piston slidable in the cylinder and provided with oppositely disposed intake ports and with an-exhaust port, the outer piston forming means for opening and closing the exhaust port and the inlet port of the cylinder, an inner piston mounted to slide in the outer piston, means for connecting the pistons for simultaneous movement in opposite directions, the outer piston being provided with an exhaust port and having oppositely placed intake ports, a firing means carried by the cylinder and located between the ends .of the cylinder; one intake port of the outer piston being closed by the cylinder, the inner piston being in open position with respect to the inlet port of the cylinder, the

other intake port of the outer piston registering with the firing means, the exhaustport of the cylinder and the exhaust port of the outer piston being out of-registration, and

both intake ports of the outer piston being in registration with the intake ports of the cylinder, when the pistons have moved in opposite directions toward the firing means at the beginning of a power stroke; the inner piston being in open position with respect to the exhaust ports of the cylinder and the outer piston, when the pistons have moved away from the firing means in opposite directions; a cap, provided with a chamber communicating with the passages, and means for securing the cap detachably to the cylinder, to give access to the passages, and to the intake ports of the cylinder and to the inlet ports of the outer piston when said ports are in registration.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses.

CLAYTON UPTOX. Witnesses:

M. BjoMMnRsoHmM,

RoY ALDEN. 

